The year 2019 marked the return of measles after almost two decades of unprecedented successes in global vaccination programs. Measles transmission due to sharp declines in measles-mumps-rubella (MMR) vaccination coverage is now widespread among nations that previously saw impressive public health gains including Philippines, DR Congo, Madagascar, Samoa, many in Europe, and the United States and Venezuela in the Americas. Key determinants include the interruption of vaccine health systems due to war, conflict, and political instability; food insecurity and urbanization; and an increasingly globalized vaccine hesitancy or antivaccine movement. Vaccine hesitancy is partly responsible for over 100 000 measles cases in Europe in 2019, and the re-emergence of measles to the United States almost twenty years after it was eliminated. Three major elements currently comprise the American antivaccine movement, including a media empire, a political arm, and deliberate predatory behavior. New strategies will be required to counter these activities.

在全球疫苗接种计划近二十年来史无前例的成功之后，2019年标志着麻疹的回归。由于麻疹，腮腺炎和风疹（MMR）疫苗接种覆盖率急剧下降而导致的麻疹传播在菲律宾，DR刚果，马达加斯加，萨摩亚，欧洲许多国家，以及美国和委内瑞拉等以前公共卫生收益显着的国家中现已广泛传播。美洲。关键决定因素包括由于战争，冲突和政治不稳定而导致疫苗卫生系统中断；粮食不安全和城市化；以及日益全球化的疫苗犹豫或抗疫苗运动。疫苗的犹豫是2019年欧洲超过10万例麻疹病例的部分原因，麻疹在被消除后将近二十年再次出现在美国。当前，美国的反疫苗运动包括三个主要方面，包括媒体帝国，政治部门和蓄意的掠夺行为。需要采取新的战略来应对这些活动。